diff --git a/wp-includes/class-wp-term-query.php b/wp-includes/class-wp-term-query.php
index 961bd0e101..79ec315c4f 100644
--- a/wp-includes/class-wp-term-query.php
+++ b/wp-includes/class-wp-term-query.php
@@ -323,7 +323,7 @@ class WP_Term_Query {
 		 */
 		do_action( 'pre_get_terms', $this );
 
-		$taxonomies = $args['taxonomy'];
+		$taxonomies = (array) $args['taxonomy'];
 
 		// Save queries by not crawling the tree in the case of multiple taxes or a flat tax.
 		$has_hierarchical_tax = false;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 751b617a45..23d41651c2 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40146';
+$wp_version = '4.8-alpha-40147';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.